Car-ventilator



(No Model.)

C. P. WEISS.

GAR VENTILATOR.

No. 390,828. Patented Oct. 9, 1888.

Inru ant or.

' N. PETERS, FXIola-U\hognpher. \Vtlsh nglun. I}: c-

' PATENT rFrcE.

CHARLES P. IVEISS, OF SUSQUEHANNA, PENNSYLVANIA.

CAR-VENTI LATO R.

SPECIFICATION forming part of Letters Patent No. 390,828, dated October 9, 1888.

Application filed June '7, 1888- Serial No. 276,312. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES I. WEISS, a citizen of the United States, residing at Susquehanna, in the county of Susquehanna and State of Pennsylvania, have invented certain new and useful Improvements in CarVentilators; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and to the letters and figures of reference marked thereon. Q

My invention, though adapted to various uses, relates more particularly to that class of devices used in connection with the passenger and box freight cars of railroads, for ventilating the same, and is shown as arranged for such use in the accompanying drawings, in which- Figure l is a plan view showing my invention as arranged in the roof of an ordinary passenger-coach. The portion of the roof above the line pg of Fig. 2 is, for convenience, shown removed. Fig. 2 is a transverse section through the roof of the car along the line a: x of Fig. 1. Fig. 3 represents a horizontal section of a portion of my ventilating device, showing in detail the arrangement of parts which I prefer. Fig. 4 represents a vertical section along the line of Fig. 3.

The blast tube or pipe A A extends along the length of the car in a convenient position under the roof, and is provided at each end with. the funnels A A. These funnels are arranged to extendjust to or beyond the end walls of the car directly under the roof, as shown. At convenient points along the length of the tube A A, I arrange branch tubes or pipes a a, preferably at right angles to the tube A. These branch tubes are provided with perforated diaphragms or screens d, Fig. 3, and terminate in the conical nozzles 0. Near each end ofthetube A, I arrange an automatic trap orbutterfly-valve, f, so constructed thata slightpressure ofair from the outside will open the same inward, while a pressure from the inside will hold the same closed. This valve may be arranged in any well-known or convenient manner. I prefer, however, to use a butterfly or trap valve, as shown at f, Figs.

3 and 4, pivotally hung upon a horizontal axis, f slightly above the center of the valve. The stop 1" is arranged to engage the outside of the lower portion of the valvefand hold the same closed against pressure from the inside.

Around the branch tubes a are arranged the tubes 9, ending in the conical regulators g. The tubes 9 are arranged to move freely upon the tubes a and are secured to the racks g, which engage with the pinions h, mounted in suitable bearings. By means of the small hand-wheels h the pinion It can be rotated to move the regulators g in or out along the branch tubes a.

Outside of the monitor or roof of the car I arrange one or more draft-tubes, B B. I have shown two such tubes,which are connected by the branch tubes 11, passing through the sides of the monitor,with the conical ventilators G 0, arranged inside of the roof in any convenient manner and around the blast-nozzles c, as shown in Fig. 3. If desired, perforated diaphragms or screens 0 can be placed across the mouths of the conical ventilators O. The tubes B B are provided with flaring conical ends, as shown at b, Fig. 3. A hollow double cone, I, is arranged to fit in the conical flange b ofthe tube B and to move freelyin and out along the guides i, secured to the cone I. The screwthreaded rod K passes freely through the cone I and suitable guides in the tube B, and is held in the screw-threaded nut Z, securedin he tube B. By nieansof the hand-wheel It, secured to the rod K, the latter can be ad justed to regulate the opening to the conical valve I. A light spiral spring, at, engages with the cone-valve I and holds the latter normally open.

\Vith the apparatus arranged as described, it will be seen that when the car is in motion a considerable pressure of air is created in the funnel A at the forward end of the car. This opens the valvefat the front end of the tube A and closes the valve at the rear end. Due to the motion of the car a current of air is established from the forward funnel through the tube A into the various branch tubes c. The current of air from the branch tubes a is concentrated by the conical nozzles 6, thus creating a considerable blast of air into the branch tubes 1) of the draft-tube B. The force of this blast from the nozzle 6 induces a current of air into the conical ventilator C and through the 5 branch tubes Z) into the draft-tube B. The effect of the blast from the nozzle can be perfectly regulated by operating the regulator gby means of the hand-wheel It to adjust the amount of openingbetween the regulator g and re the ventilator (1. At the same time the conical valve I at the forward end ofeaeh draft is forced in against the tension of the spring in by the force ofthe air due to the motion of the car'. 'The rear valve, I, however, remains r open,and the force of the air, due to the motion of the car impinging upon the conical flanges I), is forced outward and away from the opening of the rear valve, I, thus accelerating the current of air from the draft or outlet tube or pipe B. It will thus be seen that while the car is in motion there is a constant flow of air from the blast or inlet tube A into the draft or outlet tube B, and that this induces a flow ofair from the interior of the car through the ventilators 0, thus fully ventilating the car. It will further be observed that the amount of ventilation can be fully controlled and reg ulated by operating the regulators gby means of the hand-wheels it or equivalent devices, 50 and that the various devices will adjust themselves automatically upon reversing the direction of the motion of the car.

Any cinder which may collect in the blasttube A can readily be blown out at any time ;5 while the car is in motion by merely opening the valvefat the rear end by hand for a few seconds. The passage of cinder into the ventilator will be prevented by the perforated diaphragms or screen located in the branches to from the blast-tube.

It will be seen that if a car arranged with ventilating apparatus as described remains standing on a side track the apparatus will operate in similar manner in case of any wind or .5 breeze.

It is of course apparent that, if desired, one or more blasttubes may be used for each car, and that such tubes may be arranged in any portion of the car as may be most convenient.

,0 I prefer for passenger-coaches, however, to locate such tubes, as shown, in the roof of the car, and to use one blasttube of about six inches in diameter and two draft tubes of about twelves inches each in diameter located 5 one at each side of the monitor.

For box freightears to be used for transporting perishable merchandise, I prefer to arrange the ventilator with the perforated screens, omitting the regulator and the device for operating the same.

If desired, the regulator can be connected with some one of the various heat-regulating devices which are now being introduced into railroad-cars.

As will be apparent, "arious modifications in the construction and arrangement of the details of this apparatus may be readily effected without departing from the spirit of my 111 vcntion.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a car-ventilator, the combinatiomwrth a blast-tube open at one end without the car, and having branch tubes opening within the car, of a draft-tube open at one end without the car in the opposite direction to the opening of the blast-tube, and havingbranch tubes opening within the car, registering with the branch tubes of the blast-tube and leaving an opening between said branch tubes, all constructed, arranged,aud operating substantlally as shown and described.

2. In a ear-ventilator, the combinatiomwith a blast-tube open at each end and without the car, and having valves at each end opening inward, and provided with branch pipes opening within the ear, of a draft-tube open at each end and without the car, and having valves at each end opening outward, and provided with branch tubes opening within the car, registering with the branch tubes of the blast-tube and leaving an opening between said branch tubes, all constructed, arranged, and operating substantially as shown and described.

3. In a car-ventilator, the combinatiomwith the blast-tube open at each end without the car, and having valves at each end opening inward, and provided with branch tubes opening within the car, of a draft-tube having conical flaring ends opening without the ear, and conical valves conforming to the shape of said flaring ends and opening outward, and setserews for regulating the amountofopening ofsaid valves, and branch tubes extending from said drafttube opening within the. car, registering with the branch tubes of the blast-tube and leaving an opening between said branch tubes, all constructed, arranged, and operating substantially as shown and described.

4. In a car-ventilator, the combination, with a blast-tube open at one end without the car, and having branch tubes opening within the car, of a draft-tube open at one end without the car in the opposite direction to the opening of the blast tube, and having branch tubes opening within the ear, registering with the branch tubes of the blast-tube and leaving an opening between said branch tubes, and means for regulating the extent of said opening, all constructed, arranged, and operating substantially as shown and described.

5. In a car-ventilator, the combination,with a blast-tube open at each end without the car, and having valves at each end opening inward, and provided with branch tubes opening within the car, of a draft-tube open at each end without the car, and having valves at each end opening outward, and provided with branch tubes opening within the car, registering with the branch tubes of the blast-tube In testimony whereof I affix my signature in and leaving an opening between the same, and presence of two witnesses.

sleeves mounted on the branch blast-tubes,

and means for adjusting said sleeves, where- CHARLES P. WEISS. by the opening between said branch tubes may be regulated, all constructed, arranged, \Vitne'sses: and operating substantially as shown and de- 0. F. WRIGHT, scribed. M. B. WRIGHT. 

